Filter.



No. 779,013. PATBNTED JAN. 3, 1905,

G. WAHNSIEDLER.

FILTER.

APPLICATION FILED JUNE 18, 1904.

NITED STATES Patented January 3, 1905.

ATENT FFICEO FILTER.

SPECIFICATION forming part of Letters Patent No. 77 9,013, dated January3, 1905.

Application filed June 18, 1984. Serial No. 213,173.

To all 1071,0112, it may conccrm Be it known that I, CHARLESVVAHNsInDLnR, a citizen of the United States, and a resident ofEvansville, Vanderburg county, and State of Indiana, have inventedcertain new and useful Improvements in Filters, of which the followingis a specification.

My invention relates to filters, and more particularly to that classknown as pressure-filters.

The object of my invention is to provide a filter that in addition toremoving from the water all foreign matter is easily cleaned and willnot become clogged.

Figure 1 is a view in longitudinal sectional elevation of my improvedfilter, showing sections of three of the five filtering-stones hereindescribed; and Fig. '2 is a plan view of the cog-wheels on top of thefilter, which are so arranged as to turn the filtering-stonessimultaneously.

Referring more specially to the drawings, 1 represents the casing, whichis divided into three compartments, 2 representing the unfiltered-watercompartment, 3 representing the filtering-compartment, and 1representing the filtered-water compartment. These compartments are allpractically separated from each other by partitions 5 and 6, and thecasing is provided with a suitable top 7 Journaled within the casing area plurality of tubes 8, which are closed at both ends and are providedwith apertures 9 along certain parts of their length, so as tocommunicate with the several different compartments. These tubes allfind bearing in the partition 5 and are provided at that end with anaperture 10, which makes communication from the unfiltered-water chamber2 to the filtering-chamber 3 possible. Surrounding these tubes 8 arefiltering-stones 11, which are secured in position by clamp-nuts 12, sothat the filter-tubes are practically rigid with the tubes 8.

Each one of the tubes 8 is provided with a gear 13, which meshes withthe gear on the central tube. This central tube is provided with a longshank 14:, adapted to receive a hand-wheel 15, by which all of the gearsare operated, so as to turn the respective filterstones. Thesefilter-stones are all surrounded by abrasive material 16 of any suitablesubstance.

The operation of the device is as follows: Unfiltered water entersthrough the entrancepipe 17 to the unfiltered-water chamber 2 and passesthrough screen 18 to the apertures 10 in the tubes 8. This completelyfills the filtering-chamber 3, and as the water gradually percolatesthrough the filtering-stones it enters the apertures 9 in the tubes 8and passes therethrough to similar apertures which coinvmunicate withthe chamber 1. The water is then drawn off through the outlet-pipe forfiltered water, (numbered 19.) 20 represents an outlet-pipe adapted tobe used when the chamber 2 and the screen 18 are to be washed, and 21represents an outlet-pipe to be used when the filter-stones and theabrasive material are to be washed. 22 represents the opening throughwhich new abrasive material may be placed in the filtering-chamber, and23 is the opening whereby this material may be removed after being used.When it is desired to clean the filtering-stones, a suitable valve inthe outlet-pipe 19 is closed and a cock in the outlet-pipe 21 is openedand the water allowed to flush through the abrasive material throughscreen 21*. At the same time the filtering-stones are made to revolve bythe operation of the handwheel 15.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a filter, the combination with a casing having a chamber forunfiltered water, achamher for filtered water and a filtering-chamber,filtering-tubes revolubly mounted within said filtering-chamber,perforated tubes centrally mounted within said filter-tubes andcommunicating with the chambers aforesaid, cleansing means surroundingsaid filter-tubes, and means for revolving said filter-tubes.

2. In a filter, the combination with a casing having an unfiltered-waterchamber, a filteredwater chamber and a filtering-chamber, perforatedtubes extending through said filteredwater chamber and through saidfilteringchamber and revolubly mounted therein, filtering-tubes rigidlysecured to said perforated tubes and revoluble therewith, saidperforated tubes provided with inlet and outlet ports, means forscreening the Water prior to its entrance to the filtering-chamber,means for cleaning the filtering-tubes, and means for revolving saidfiltering-tubes.

3. Inafilter, the combination With a casing having a plurality ofchambers, a screen mounted Within one of said chambers, filtering-tubesrevolubly mounted in another of said chambers, perforated tubescentrally secured Within said filtering-tubes and provided With inletand outlet ports, one of said outlet-ports being in the third chamber,abrasive material surrounding the filter-tubes in the second-mentionedchamber, and means for revolving all of said tubes simultaneouslywhereby the abrasive material Will clean the surface of saidfilter-tubes.

4. In a filter, the combination With a casing having anentrance-chamber, of a filtering chamber, filter-tubes revolubly mountedin said filtering-chamber, a filtered-Water chamber, perforated tubesconnecting all of said chambers, and means for revolving thefiltertubes.

5. In a filter, the combination With a casing having anentrance-chamber, of a filteringchamber separated from saidentrance-chamber, filter-tubes revoluloly mounted in saidliltering-chamber, a filtered Water chamber, pipes secured to saidfilter-tubes and communicating With all of said chambers, and means forrevolving said pipes.

6. In a filter, the combination Witha casing having an entrance-chamber,of a filteringchamber separated from the entrance-chamber, afiltered\vater chamber separated from the filtering-chamber, filter-tubes revolubly mounted in saidfiltering-chamber, perforated tubessecured to and extending through said filter-tubes and communicatingwith all of said chambers, means for cleaning the filter-tubes,

CHARLES WAHNSIEDLER.

Witnesses:

C. I. FISHER, FRANK C. J ONES.,

